Loom-shuttle.



i. H. CARTER @L W.fH. SELL'EY. LOOM SHUTTLE.

APPLICATION FILED !AN.26.1915.

1,237,298.. PatenmdAug.21,1917. Y

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EDWARD H. oAnTERKAND WILLIAM H. snLLEY, or nnwnnnronn]iunssaorrusn'rrs.

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To all 'zo/0m t may concern:

Be it known that we, EDWARD H. CARTER and Wimmer H. SnLLnY, bothcitizens of the United States, and residents of New Bedford, in thecounty of Bristol and State of hassachusetts, have invented new anduseful Improvements in Loom-Shuttles, of

whicl'ithe following is a specification.

. Our invention relates to threading devices `for loom shuttles, and ischaracterized by (amongother things) a threading memberl which isnot'foperated by any mechanical train, and need have no spring to holdit in or return it to normalfposition.

In the drawings hereto annexed, which illustrate our invention and showwhat we believe to be the'best form thereof,

Figurel l `is a top plan view of part of a loom shuttle, embodying ourimprovements; Fi g2 is a longitudinal section of the loom shuttle; i

Fig. 3 is aview in perspective, on a large scale, showing the shuttlethreading devices positions they occupy before threading;

Fig. L is a view similar to rig. 3, but

showing the parts in the position `fthey oc-.

cupy when' the shuttle is threaded; n

Fig. 5 `is a view in perspective, on large scale, of the finger plateand its plunger ca-tcl'r;v p i Fig. 6 is a vi ew in perspective of theplun gergand f i l Fig. 7 is a view in perspective of the plunger tube.Y

f 'The `body of the shuttle S is cut away no more `than has been thepractice for many years,`in the standard shuttles.v A cavity K is formedto receive the linger plate K, and a narrowslot C leads from the cavityK "to the usual spaceprovided for the cop. A

round `hole is bored transversely through the shuttle body,.intersecting `the slot C7 to rey ceive the plunger tube Aand theporcelain f eyeB. A 'small metal pin P is inserted in the shuttlefbodytoserve as a stop for the plunger' H; and a porcelainfpin E is inserted inaismall. hole through the bottom of the shuttle adjacent to the side vofthe slot C.

'It will be observed thatthe shuttle body is left intact at the sides,except for the transverse hole for theplungertube,y which does notdetract from the strength and solidity of the shuttle body, any morethan the indispensableeye hole formed yin old stylev shuttles.

The main factors in the threadlng devlce Speccation of Letters Patent.Patented 21, 19177.

i Application led January 26, 1915. Serial No. 4,545.'

.i are the plunger tube A, and plunger H. The

tube A is elliptical in cross section,l and has Alongitudinal ribs D"formed in its body.

P, the porcelain eyeB isithenxed lin the mouth of the hole. `The plungerH consists of a solid piece of metal, made elliptical in cross sectionso as to yslide in the tube A freely, but without turning on its axis.The plunger H carries an eXtenSiOnbar H in the end of which athread-engaging notch H2 is cut. The over-alllength ofthe plunger H andextension .bar Hfis such that when the butt'of the plunger rests againstthe pin P, the notched Aend of kthe extension bar H will lie justy clearof the slot C', formed in the shuttle body (see Fig. l).

The plunger tube A istransversely slotted at C, so that when `thetubefis seated against the pin l), the slot'Cin the tube coincides withthe slot Cr in the yshuttle body. The tube A has also a hole F, betweenthe slot C and the eye B, and the shuttle bodyhas a hole F formedinit,mahingcommunication from the cavity K to the hole F. `A slot Gr iscut in the tube A atr the bottom thereof, to receive the plunger-catchL. (See Fig. 2.) The ingerplate K is pivoted vat K2, and .lies in thecavityK.' `,The finger plate K is slotted at il, and is provided with aneXtension which terminates in the plunger catch L.. A spring Mstressesthenger plate K upward and thusnormallyholds the plungercatch Lin the slot Cr, inposition to retain the plunger H in placek at theinner end of the plunger tube A."

VViththe parts above enumerated in this rnormal position, the operationof threading .the shuttle is as follows z*- The operator, ,holding` theshuttle in his right hand with his left hand draws ythe I'illing fromthe cop VTinto the slot C, across .sharply to the left, checks it, andthereupon the inertia of the plunger H drives it to the eye end ofthetube A, carrying with it the into the tube A from the running end asvrwell as from the cop. T he channels formed kby the-ribs or corrugationsD receive both:

pai'tsof the fillinggthe plunger Hi is therefore left as freeas-possibleto carry the loop of filling toithe mouth of the eye B, when theoperator picksit out witlrhis lefthand, andthe threading is done.- Then,still holding his righthforefingeron the finger plate K, the operatorjerks theplunger HA back against the pink l), releases the finger plateR, allowing the spring M toreturn the plungery catch L to place in the:slot Gr.

After a little practice, any operator can thread hisshuttle'in muchlessftime than is required for any otherniethod known to us. Thethreading devices abovey described obviouslysupersede the old andunsanitary method of sucking the filling through the shuttle eye. But'habit lisstrong, and the proverbial conservatismY of millhands willdoubtless constrain many, who have become accustomed to theoldmethodofsucking the fillingthrough the shuttleeye, to ignore the mechanicalthreader and attempt to thread our improved shuttle by` sucking thefilling throughfthe eye. For the purpose of defeating this, we providethe vent hole F and the air channel F between the slot' C and eye B.This air passageis made so large thatv all an operator can do is-tosuckair through the `holes F and F without' stirring the filling. Afterlosing `time with a few such attempts, the operator' will handletheimprovedshuttle as he should.

rllhe porcelain pinE-takesthe turn of the filling' and protects themetal tube A from beingfcut by the fillingduring weaving.

rIfhe slot C is narrow, and when-the-fillingtendsto balloon, the sidesof the slot C engage the filling, check ballooning, andproduce propertension on the filling itself',

obviating the `necessity for*` providing shuttles (as is frequently thecase) with two supplemental eyes for leading thefilling-` intol andoutofthe shuttle.

The inner end of the porcelain eyeB serves as a stop for `the plunger H,limiting its outward throw. Theellipticalcross `section ofthe tube A isbestishown at D, Fig. 7.

The functions ofi the several operating' parts above described areasfollows:

VThat of the elliptic tube A, is to serve as a slideway for the plungerH, and prevent the plunger from turning on its longitudinal aXis.

That of the plunger H, is to furnish mass and inertiar wherewith tocarry the fillingto the outer end of the shuttle eye, without theemployment of any mechanical propelling parts, and to carry the plungeritself backy to normal position, without the eniployinent ofy anylreverse-propelling parts, such asa spring and mechanical connections.That of.v the'catchL is to hold the plunger H in its normal restingplaceat all times when the plunger is not required for shuttlethreading.

That of the nger. plate K is to remove the catch Lfromits plungerholding position-;..that of the spring M, to return and hold the catch Ltoy plunger holding position; that of the slot J, .to prevent the`finger of the operator from binding the filling while vdepressing thefinger plate.

That of the slot C, to admit the 'filling-to the tube A so that thenotch H2 of the eX- 'tension bar H will engage it.

That of the extension bar H with its notch H2, to engage and protrudethe filling from the side of the shuttle.

Thatof the-slot C, to guide the filling into the slot C while threading,and to produce tensionr on the filling and prevent ballooning, whileweaving is being done.

That of the porcelain pin E', to resist wear by the passageof thefilling during weaving, and to protect the tube A against cutting by thefilling.

That of the vent hole at F and F to baii'le ill-advised attempts to suckthe filling through the eye Binthe old way.

What we claim and desire to secure by LettersPatent is:

In a threading device for loom shuttles, the combination of aplunger-tube placed transversely inzthe shuttle, opening at one sideofthe'shuttle, and provided with a slot for introducing filling thread,a movable slotted finger plate mounted in the shuttle adjacent totheslot in the plunger-tube, a`

spring normally stressing the finger plate upward, and a plunger, freelymovable in thetube and adapted by virtue of its mass alone to protrudethe thread at the end ofv Copies of thisl patentfmay beiobtained forfveAcents each; by, addressing the 1Cominissione1 of Patents,-

` Washington, D. C.

